AFK System funktioniert nicht

function AFK_System_func()
local x, y, z = getElementPosition ( lp )
local dist = getDistanceBetweenPoints2D ( oldAFKXPos, oldAFKYPos, x, y )
	if getElementData ( lp, "loggedin" ) then
		if not action and getElementData ( lp, "jailtime" ) <= 0 then
			if afkRun == 15 and not getElementData ( lp, "AFK" ) == 0 then
				outputChatBox ( "Du wurdest AFK gesetzt", 0, 125, 0 )
				setElementData ( lp, "AFK", 1 )
				action = true
				oldAFKXPos = x
				oldAFKYPos = y
			else
				afkRun = afkRun + 1
				action = false
			end
		else
			if dist > 5 and getElementData ( lp, "AFK" ) == 1 or getElementHealth ( lp ) <= 1 or isElement ( gImage["Back"] ) or guiGetVisible ( gWindow["pokerOwnCards"] ) then
				outputChatBox ( "Willkommen zurück", 125, 0, 0 )
				setElementData ( lp, "AFK", 0 )
				action = false
				afkRun = 0 
			end
		end
	end
end
setTimer ( AFK_System_func, 4000, -1 )